In chemical reactions, the bifurcation points are determined through the triangulation of the system. In the interaction of the components, bifurcation sequence formed and the system evolves along one of them to form a stable compound. The transformations of the components at the bifurcation point are determined basis on the "The Gibbs function normalized to the total number of electrons". All transformations are described through chemical potential, affinity, thermodynamics force. Calculated the production of entropy, the entropy flux and the reaction rate constant, which allowing the system to choose a certain path of evolutionary transformations.